PRESTON, MARYLAND

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Elevation: 2 meters Latitude: 38 43N Longitude: 075 55W

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DAILY WEATHER AVERAGE - 12 DECEMBER

[ °F ] °C

Weather Element	Avg	Avg High	Avg Low	Record High	Record Low
Temperature	4.8 ^°C	9.1 ^°C	1.3 ^°C	21 ^°C (2015)	-4 ^°C (2011)
Dewpoint	1 ^°C	3.9 ^°C	-3.3 ^°C	14 ^°C (2010)	-12 ^°C (2009)
Humidity	78.7 ^%	92.6 ^%	57.9 ^%		39 ^% (2009)
Barometer	1021 ^hPa	1026.8 ^hPa	1016.9 ^hPa	1038.3 ^hPa (2011)	990.5 ^hPa (2010)
Wind Speed	10 ^km/h	19.5 ^km/h		33.3 ^km/h (2010)
Wind Gust		38.6 ^km/h		51.8 ^km/h (2010)
Precipitation	16 ^mm			16 ^mm (2010)

Weather Element	Average
Visibility	13.8 ^km
Wind Direction	SSE (154.6 °)

Weather Element	Total
Heating Degree Days	13.1 (Base 18.3)
Growing Degree Days	4 (Base 10)

Total Years on Record: 11

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